Measurement of the spectral properties of the two-photon state generated via type-II spontaneous parametric down-conversion

2005 ◽  
Author(s):  
Yoon-Ho Kim ◽  
Warren P. Grice
Keyword(s):  
Spectral Properties ◽  
Type Ii ◽  
Photon State ◽  
Two Photon ◽  
Parametric Down Conversion ◽  
Down Conversion

TWO-PHOTON HIGH-DIMENSIONAL SPATIAL ENTANGLEMENT: THEORY AND EXPERIMENT

2006 ◽  
Vol 20 (01) ◽  
pp. 1-23 ◽  
Author(s):  
LEONARDO NEVES ◽  
G. LIMA ◽  
J. G. AGUIRRE GÓMEZ ◽  
C. H. MONKEN ◽  
C. SAAVEDRA ◽  
...  
Keyword(s):  
Quantum Systems ◽  
High Dimensional ◽  
Entangled States ◽  
Type Ii ◽  
Opaque Screen ◽  
Two Photon ◽  
Parametric Down Conversion ◽  
Experimental Works ◽  
Maximally Entangled States ◽  
Down Conversion

We review recent theoretical and experimental works where are proposed and demonstrated how to use photon pairs created by spontaneous parametric down-conversion to generate entangled states of D-dimensional quantum systems, or qudits. This is the first demonstration of high-dimensional entanglement based on the intrinsic transverse momentum entanglement of the type-II down-converted photons. The qudit space is defined by an aperture made up of an opaque screen with D slits (paths), placed in the arms of the twin photons. By manipulating the pump beam profile we can prepare different entangled states of these possible paths. We focus our attention on an important case for applications in quantum information: the maximally entangled states. Experimental results for qudits with D=4 and D=8 are shown and measuring a two-photon conditional interference, we also demonstrate the nonclassical character of the correlations.

Two-Photon Interference with the Type II Spontaneous Parametric Down-Conversion

2000 ◽  
Vol 18 (1) ◽  
pp. 45-47 ◽  
Author(s):  
Jiang Yun-Kun ◽  
Shi Bao-Sen ◽  
Li Jian ◽  
Duan Kai-Min ◽  
Fan Xiao-Feng ◽  
...  
Keyword(s):  
Type Ii ◽  
Two Photon ◽  
Parametric Down Conversion ◽  
Down Conversion

Two-photon entanglement in type-II parametric down-conversion

1994 ◽  
Vol 50 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Y. H. Shih ◽  
A. V. Sergienko ◽  
Morton H. Rubin ◽  
T. E. Kiess ◽  
C. O. Alley
Keyword(s):  
Type Ii ◽  
Two Photon ◽  
Parametric Down Conversion ◽  
Down Conversion

Creating high-dimensional time-bin entanglement using mode-locked lasers

2002 ◽  
Vol 2 (6) ◽  
pp. 425-433
Author(s):  
H. de Riedmatten ◽  
I. Marcikic ◽  
H. Zbinden ◽  
N. Gisin
Keyword(s):  
High Dimensional ◽  
Photon State ◽  
Two Photon ◽  
Length Difference ◽  
Fabry Perot ◽  
Parametric Down Conversion ◽  
Path Length Difference ◽  
Mode Locked Lasers ◽  
Down Conversion ◽  
Feasible Experiment

We present a new scheme to generate high dimensional entanglement between two photonic systems. The idea is based on parametric down conversion with a sequence of pump pulses generated by a mode-locked laser. We prove experimentally the feasibility of this scheme by performing a Franson-type Bell test using a 2-way interferometer with path-length difference equal to the distance between 2 pump pulses. With this experiment, we can demonstrate entanglement for a two-photon state of at least dimension D=11. Finally, we propose a feasible experiment to show a Fabry-Perot like effect for a high dimensional two-photon state.

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